This week, Chris and Co are back from their holidays! So they're tackling their bulging mailbag of your questions. We discuss how scientists have been given the green light to cross human DNA with animal cells all in the name of medicine, eavesdroppers in your garden - the plants that respond to sound, and the world's smallest thermometer - only one molecule! We also tackle questions on keeping your beer cool on the beach, massive melons and the horticultural properties of wee. We find out about how radio shows can give Pygmies a voice and how anyone can have an out of body experience now... Like this podcast? Please help us by supporting the Naked Scientists